package cn.net.greenet.user.manage;

import cn.net.greenet.common.db_service.BaseDao;
import cn.net.greenet.user.operation.UserLoginOutAction;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * 用户登出 或者 session过期 改变用户登出时间
 *
 * @author liangdelin
 */
@WebServlet(name = "Login_out", urlPatterns = {"/user/login_out"})
public class Login_out extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        String username = request.getParameter("user");
        PrintWriter out = response.getWriter();
        try {
            BaseDao baseDao = new BaseDao();
            int row = baseDao.executeUpdate("Update user set last_out = ?, isOn = ? where name = ?", new Object[]{System.currentTimeMillis(), 0, username});
            if (row == 1) {
                UserLoginOutAction.insertDB(username);  //生成用户的登出日志
                HttpSession session=request.getSession();
                session.invalidate();
                out.println("{\"result\":\"true\"}");
            } else {
                out.println("{\"result\":\"false\"}");
            }
        } catch (Exception e) {
            e.printStackTrace();
            out.println("{\"result\":\"false\"}");
        } finally {
            out.close();
        }

    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
